Furnace and air-injecting nozzle therefor.



J. H. PARSONS. FURNACE AND AIR INJEGTING NOZZLE THEREFOR.

APPLIUATION FILED 1111.11.12, 190s. RENEWED AUG. 1a, 1913.

Patented Apr. 14, 1914.

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J. H. PARSONS. FURNACE AND AIR INJEGTING NOZZLE THEREFOR. APPLICATION FILED MARIZ, 1908. EENIIWED AUG. 16, 1913. 1,092,852.

Patented Apr. 14, 1914.

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COLUMBIA PLANOGRAPH CO..\\ASHINGTON. D. c.

J. H. PARSONS.

FURNACE AND AIR INJEGTING NOZZLE THEREFOR. 111111111111111111111111111111111111111111111 3.

LI ll p fin STATES FATE JOHN H. PARSONS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO PARSONS ENGINEERING COMPANY, OF WILMINGTON, DELAWARE, A CORPORATION OF DELAWARE.

FURNACE AND AIR-INJECTING- NOZZLE THEREFOR.

Specification of Letters Patent.

Patented Apr. 14, 1914.

Application filed March 12, 1908, Serial No. 420,557. Renewed August 16, 1913. Serial No. 785,127.

To all whom it may concern:

Be it known that I, JoHN H. PARSONS, a citizen of the United States, residing at- Philadelphia, in the county of Philadelphia and State of Pennsylvania, haveinvented certain new and useful Improvements in Furnaces and Air-Injecting Nozzles Therefor, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to furnaces of my improved type in which provision is made for introducing into the combustion chamber a supply of air, steam, or both air and steam, in such a quantity, temperature, force, and direction as to insure thecommingling of the same with the gaseous products or fine particles of fuel which arise from the burning bed or body of fuel whereby to enable substantially perfect combustion to be attained.

The primary object of the present invention is to provide an improved combined heater and nozzle in which the air may be properly heated within the fire box, and directed, after such heating, over the bed of fuel and into the combustion chamber;

To possibly facilitate a full appreciation of the invention, it may be noted that where the air supply nozzles are arranged within the fire box, or partially embedded in the fuel, the iron piping of which the nozzle is usually formed, under subjection to the intense heat, is under short use impaired, if not altogether ruined, and it is with a view of protecting the exposed surfaces of the nozzle fro-m this deteriorating influence of the heat, that the present invention has been inspired.

A practical embodiment of the invention embraces a facing of fire brick or equivalent protecting substance for the exposed portion of the nozzle, and more specifically such a facing as will be readily and detachably affixed to the nozzle whereby the same may be easily and effectively installed in the first instance, while being capable with equal facility of being removed for purposes of substitution, repair, etc.

In the present case, I will illustrate and describe one convenient embodiment of the invention wherein the nozzle is formed or provided with instrumentalities whereby a sectional facing of fire brick, formed complementary to said instrumentalities may be detachably interlocked with the nozzle and when assembled constitute a continuous proteotlng facing for the portion of the nozzle which is liable to be subjected to damage by excessive heat. In this embodiment, the interlocking of the sections of fire brick and nozzle is such that it is simply necessary to slip the sections in place where the same are maintained in operative posit-ion without requiring independent securing devices.

Other features of novelty inherent in this device reside in the interlocking, or interfitting of the sections of fire brick and nozzle whereby, should one of the lower or intermediate sections become broken, the same may be removed without disturbing the upper sections, which latter in turn may be slipped down to fill the space vacated by the removed broken section, and a new section added at the top; and the interfitting of the adjoining edges or surfaces of the sections of fire brick whereby, as an entirety, they present a continuous protecting wall with practically no crevices or spaces therebetween through which the arising flames or heated gases from the fuel may pass to the body of the nozzle.

A still further characteristic feature of the present invention, and one which is of considerable importance, is afforded by the formation of the parts of the nozzle, and immediately associated devices, rendering it possible to remove the nozzle from the fire box, either intact or sectionally, by simply raising it from its support, usually the bottom of the fire box.

All of the above recited, and other novel details in the construction and arrangement of parts will be clear from the detailed description hereinafter contained, when read in connection with the accompanying drawings forming part thereof, wherein the before mentioned convenient embodiment of the invention is shown.

In the drawings, Figure 1 is a vertical sectional view through a fragmentary portion of the firing or front end of the fire box of an ordinary locomotive, showing the improved combined heater and nozzle properly mounted in place in the corner of the fire chamber, Fig. 2 is a plan view on the section X-X of Fig. 1, Fig. 3 is a longitudinal sectional view through the nozzle, Fig. 4: is a transverse sectional view on the line Y-Y of Fig. 1. Fig. 5 is a detail perspective view of one section of the protective facing, and Fig. 6 is a detail perspective view of the discharge end of the nozzle.

Referring more specifically to the drawings, wherein like reference characters designate the same parts in the several views, A designates the fire chamber of the locomotive, B the grate at the bottom thereof, and C the door opening. In the opposite corners of the fire chamber, of which it is simply necessary to refer and illustrate but one, inasmuch as they are alike, I mount, conveniently in the plane of the grate, a supporting or bed plate D provided wit-h a suitable aperture E and a depending collar F. To the lower end of the collar F, I secure an elbow pipe Gr extending laterally to the side of the locomotive and carrying at its end a screened intake funnel I-I facing forwardly of the locomotive to receive air forced thereinto by the travel of the same.

I represents the body or heater portion of the nozzle, the same having a flat bottom J designed to rest upon the bed plate D and having a depending hollow stem K closely fitting the collar F and opening to the interior of the pipe G. The exterior transverse contour of the nozzle is best seen in Fig. 4 of the drawings, upon an inspection of which it will be observed that the back of the nozzle is of angular formation, as at L, to fit the corner of the fire chamber and be protected, by its abutment with the walls ofthe fire box, from direct exposure to the flames and gases in the fire chamber. The interior of the nozzle is formed with oppositely disposed baflies M and N, the former projecting upwardly from the bottom J of the nozzle to a point short of the top of the nozzle to provide a passage 0, while the latter depends from the top of the nozzle to a point short of the bot-tom thereof to provide a return passage P opening to a third passage Q leading upwardly and out through the open upper end of the heating portion of the nozzle now being described. By this arrangement, a long circuitous conduit for the air is afforded whereby to heat the same during its passage, from the intake H to its discharge into the fire chamber, to a degree approximating the point of instantaneous ignition when commingled with the gases in said fire chamber. The top of the heater I .portion of the nozzle shown at It, is tapered toreceive a correspondingly tapered portion of a detachable mouth or discharge end S of the nozzle this mouth being flattened whereby to emit the heated air in a film or sheet formation, the top and bottom walls thereof being reinforced against buckling or collapse under the heat by a vertical partition T. The proper predetermined position of the discharge end S of the nozzle is maintained through the medium of a pin U secured to the wall of the fire box and loosely fitting a slotted lug V thereon.

To enable the injection of steam into the circuitous conduit of the nozzle, I provide a threaded nipple W projecting upwardly from the bed plate D, through an aperture X in the bottom J of the heater, detachably secured to which threaded nipple is a correspondingly threaded jet nozzle Y discharging rupwardly and centrally of the passage Q. The purpose of this jet nozzle is to enable the admixture of air and steam in the heater prior to the discharge into .the fire chamber, and also for the purpose of utilizing the force of the jet to induce air through a suitably controlled pipe Z cou' pled to an open portion of the base plate D alined with the opening of the nipple IV.

From the description of so much of the device as has been above set forth, it will be appreciated that the heater portion of the nozzle may be inserted or withdrawn by simply placing the same upon or lifting it from the bed plate D; also that the dis charge end S may be removed at will'by simply tilting the device forward slightly to permit disengagement of the pin U with the slotted lug V; and also that the jet nozzle Y may be readily removed and replaced, owing to the threaded connection with the nipple W.

The manner of protecting the front or exposed surface of the nozzle will be now considered.

The opposite sides of the heater portion I are depressed to form vertical grooves or. I

ways 2, and as part of the bottom J I form a flanged ledge 73, the upper surface of which is beveled, or inclines downwardly and inwardly toward the adjoining wall of the heater. Adapted to be successively slipped downwardly'into the grooves or' ways 2, and be supported upon the ledge 3, are a serles of fire br1ck or equlvalent sections 4, provided with corresponding oppoand upon the correspondingly beveled surface of the ledge 3 and present a continuous protecting front 7. By this arrangement, the sections of fire brick are not only held in position by the ledge 3 and grooved portions 2 of the heater portion I, but they arealso effectively wedged together against rattling or play which would tend to fracture or Wear the edges or corners of the sections; also the line of meeting between the respective sections being in a direction downwardly and away from the fire chamber, no spaces or crevices are presented to the arising gases or flame from the burning fuel through which the same might gain access to the wall of the nozzle sought to be protected.

The ease and quickness with which the protecting wall may be installed is apparent, and it will also be seen that should one of the lower sections of the fire brick become broken or burnt through, it will not be necessary to remove all of the sections thereabove, but it may simply be removed, the sections above dropped down to fill the space or gap thus created, and a new section inserted at the top.

Realizing the fact that it is simply necessary in this case to disclose a single embodiment of the invention, I deem it unnecessary to illustrate and describe the many other advantageous embodiments which are or will be apparent to those skilled in the art, and I desire it understood that by disclosing a convenient or preferred form of apparatus, it is not with the intention of restricting the invention thereto.

I claim:

1. A nozzle of the character described provided with grooves extending along opposite edges longitudinally of the nozzle, a protective facing for the nozzle comprising a plurality of adjoining sections having marginal portions interfitting with the grooves of the nozzle, and battles on the interior of the nozzle constituting a circuitous course therethrough, one of the bafiies comprising a partition connecting the opposite grooved portions of the nozzle.

2. A nozzle of the character described provided with grooves extending along opposite edges longitudinally of the nozzle, and baffles on the interior of the nozzle constituting a circuitous course therethrough, one of the baffles comprising a partition connecting the opposite grooved portions of the nozzle.

3. A. nozzle of the character described provided with a tubular body having inwardly deflected sides forming grooves in its opposite sides, and a protective facing for the nozzle having correspondingly disposed fianges at its edges adapted to engage the grooved portions to secure the facing in place, said facingextending across the front and around the corners of the nozzle adjoining the grooves.

4- In combination with a nozzle of the character described having a tubular body provided with inwardly deflected sides forming grooved portions at its opposite sides, a protective facing for the nozzle consisting of a plurality of adjoining sections, each section having correspondingly disposed flanges at its edges adapted to engage the grooved portions of the nozzle to retain the facing in place, said facing extending across the front and around the corners of the nozzle adjoining the grooves.

5. A nozzle of the character described having its side walls shaped interiorly and eXteriorly to constitute retaining means, and a protective facing for said nozzle having complementary retaining portions at its edges adapted to cooperate with the retaining portions of the nozzle to hold the protective facing in place, said facing extending across the front and around the corners of the nozzle adjoining the grooves.

6. An attachment of the character de.

scribed, comprising a vertically disposed heater portion having a forwardly projecting ledge at its base, inclined downwardly and inwardly on its upper surface, a detachable nozzle engaging the upper end of the heater portion having an offset discharge mouth flattened in an approximately horizontal direction to correspondingly emit the air in sheet formation, and a protecting facing for the forward wall of the heater extending from the ledge substantially to the nozzle, said facing being sectional and having inclined surfaces corresponding to the inclination of the ledge, and end portions removably engaging side edge portions of the heater to be withdrawn in a vertical direction from the heater.

7. In combination with a nozzle of the character described having oppositely disposed grooved portions, and an imperforate protective facing therefor approximately C-shaped in cross section, the ends of which removably cooperate with the grooved portions to retain the facing against lateral separation from the nozzle.

8. In combination with a nozzle of the character described having grooved portions, a protecting facing therefor tongued to engage the grooved portions to detachably interlock the facing with the nozzle, the portions forming said grooves also constituting a portion of the wall forming the interior chamber of the nozzle.

9. A nozzle of the character described provided with an interior heating chamber and provided with a protecting facing, the wall ofthe nozzle surrounding said chamber being contoured to interlock with said protecting facing at a point inwardly beyond the forward edge of the chamber 10. A nozzle of the character described In testimony whereof I aifix my'signa provided with an interior heating chamber, ture in presence of two witnesses. and provided wlth a protectlng lacing, the

Wall of the nozzle surrounding said cha1n- JOHN H. PARSONS. 5 ber being similarly contoured at separated i points to interlock with said protecting fac- Witnesses:

ing at points inwardly beyond the forward A. B. RINKENBAGH,

corners of the chamber. LEWIs H. DRIESBAOH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

